/**
 * This file is part of Cube.
 * 
 * The MIT License (MIT)
 *
 * Copyright (c) 2020-2023 Cube Team.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import { Message } from "./Message";
import { Group } from "../contact/Group";
import { MessageScope } from "./MessageScope";
import { MessageState } from "./MessageState";

/**
 * 空消息，仅用于数据管理的消息。
 * @extends Message
 */
export class NullMessage extends Message {

    constructor(sender, receiver) {
        super();

        if (receiver instanceof Group) {
            super._assign(sender.id, 0, receiver.id);
            this.sender = sender;
            this.sourecGroup = receiver;
        }
        else {
            super._assign(sender.id, receiver.id, 0);
            this.sender = sender;
            this.receiver = receiver;
        }

        this.state = MessageState.Read;
        this.scope = MessageScope.Private;
    }
}
